1.概念：表示動(dòng)作從某一時(shí)間開(kāi)始一直延續(xù)到將來(lái)某一時(shí)間。是否繼續(xù)下去，要視上下文而定。
2.基本結(jié)構(gòu)：shall/will have been doing
3.例：
I shall have been working here in this factory for twenty years by the end of the year.
到今年年底，我將在這個(gè)工廠工作20年了。
If we don't hurry up the store will have been closing before we get there.
咱們?nèi)绮豢煲稽c(diǎn)兒，等我們到了那兒，店門(mén)就會(huì)關(guān)了。
2.基本結(jié)構(gòu)：shall/will have been doing
3.例：
I shall have been working here in this factory for twenty years by the end of the year.
到今年年底，我將在這個(gè)工廠工作20年了。
If we don't hurry up the store will have been closing before we get there.
咱們?nèi)绮豢煲稽c(diǎn)兒，等我們到了那兒，店門(mén)就會(huì)關(guān)了。